- Discourse on the Method (Wikipedia)
Discourse on the Method of Rightly Conducting One’s Reason and of Seeking Truth in the Sciences (French: Discours de la Méthode pour bien conduire sa raison, et chercher la vérité dans les sciences) is a philosophical and autobiographical treatise published by René Descartes in 1637. It is best known as the source of the famous quotation “Je pense, donc je suis” (“I think, therefore I am”, or “I am thinking, therefore I exist”), which occurs in Part IV of the work. A similar argument, without this precise wording, is found in Meditations on First Philosophy (1641), and a Latin version of the same statement Cogito, ergo sum is found in Principles of Philosophy (1644).
- Tree of life (biblical) (Wikipedia)
In Judaism and Christianity, the tree of life (Hebrew: עֵץ הַחַיִּים, romanized: ‘ēṣ haḥayyīm; Latin: Lignum vitae) is first described in chapter 2, verse 9 of the Book of Genesis as being “in the midst of the Garden of Eden” with the tree of the knowledge of good and evil (עֵץ הַדַּעַת טוֹב וָרָע; Lignum scientiae boni et mali). After the fall of man, “lest he put forth his hand, and take also of the tree of life, and eat, and live for ever”, cherubim and a flaming sword are placed at the east end of the Garden to guard the way to the tree of life. The tree of life has become the subject of some debate as to whether or not the tree of the knowledge of good and evil is the same tree.